CN107931855B - Pipe clamping inhibition method for pipe cutting machine and laser pipe cutting machine - Google Patents
Pipe clamping inhibition method for pipe cutting machine and laser pipe cutting machine Download PDFInfo
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- CN107931855B CN107931855B CN201711017178.7A CN201711017178A CN107931855B CN 107931855 B CN107931855 B CN 107931855B CN 201711017178 A CN201711017178 A CN 201711017178A CN 107931855 B CN107931855 B CN 107931855B
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- chuck
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to a pipe clamping inhibition method for a pipe cutting machine, which comprises the following steps: pre-inputting position information of a to-be-cut point of the pipe and initial position information of a supporting chuck into a control system; in the cutting process, the control system judges whether the relative position relation between the current cutting point and the support chuck is in a safe range in real time, and if not, the support chuck is driven to move towards the direction close to the clamping chuck. In addition, the laser pipe cutting machine comprises a machine tool, wherein the machine tool is provided with a cutting head, a supporting chuck and a clamping chuck capable of feeding along the X direction, and the supporting chuck is connected with a supporting chuck driving mechanism capable of driving the supporting chuck to slide along the X direction. According to the invention, the relative position relation between the notch and/or the cut on the pipe and the supporting chuck is judged in real time through the control system, the supporting chuck is arranged to be movable, and the supporting chuck is driven to be far away from the current cutting point under the condition that pipe clamping possibly occurs, so that the pipe clamping phenomenon is avoided, and the product safety and the equipment safety are ensured.
Description
Technical Field
The invention belongs to the technical field of pipe cutters, and particularly relates to a pipe clamping inhibition method of a pipe cutter and a laser pipe cutter.
Background
At present, a high-end laser pipe cutting machine is basically composed of a chuck, a base, a feeding shaft, a cutting head, a laser and the like. During operation, the pipe is clamped by the clamping chuck and the supporting chuck at the same time, the clamping chuck can move in the X direction under the driving of the X-axis motor, the position of the supporting chuck is fixed, the pipe can only be supported, and the cutting head can move on the Y axis and the Z axis. The numerical control system controls the stroke of each motor to complete the cutting of the pipe.
In above-mentioned laser pipe cutting machine, because the breach or the incision characteristic on the tubular product can't be judged to the system, simultaneously because support chuck fixed mounting on the base, when misoperation or make X axle motor drive centre gripping chuck move toward X axle negative direction in the circumstances such as tubular product multiaspect processing hole characteristic, the easy card of incision or breach department on the tubular product is in the jack catch that supports the chuck, and the advance and retreat is obstructed to lead to tubular product to scrap and the lathe equipment is impaired.
Disclosure of Invention
The invention relates to a pipe clamping inhibition method for a pipe cutting machine and a laser pipe cutting machine, which can at least solve part of defects in the prior art.
The invention relates to a pipe clamping inhibition method for a pipe cutting machine, which comprises the following steps:
s1: pre-inputting position information of a to-be-cut point of the pipe and initial position information of a supporting chuck into a control system;
s2: in the cutting process, the control system judges whether the relative position relation between the current cutting point and the support chuck is in a safe range in real time, and if not, the support chuck is driven to move towards the direction close to the clamping chuck.
Further, in S2, the real-time determination operation of the control system includes:
and the control system calculates the real-time distance between the current cutting point and the support chuck along the axial direction of the pipe, compares the real-time distance with a preset distance threshold value, and drives the support chuck to move towards the direction close to the clamping chuck if the real-time distance is smaller than the preset distance threshold value.
Further, if the real-time interval is smaller than a preset interval threshold value, the supporting chuck is driven to move towards the direction close to the clamping chuck, and meanwhile the clamping chuck can still continue to feed forwards according to the specific machining characteristics of the pipe.
As one embodiment, the position information of the to-be-cut point of the pipe is input through graphic design software in an engineering graphic recognition system, and the real-time position information of the current cutting point is determined through the engineering graphic recognition system.
As an embodiment, the clamping end of each jaw of the support chuck is provided with at least one roller or ball, and when the roller is adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe, so that the support chuck clamps the pipe in a rolling contact manner.
As one of embodiments, the movement of the support chuck has an automatic driving mode and a manual driving mode.
The invention relates to a laser pipe cutting machine which comprises a machine tool, wherein the machine tool is provided with a cutting head, a supporting chuck and a clamping chuck capable of feeding along the X direction, and the supporting chuck is connected with a supporting chuck driving mechanism capable of driving the supporting chuck to slide along the X direction.
As one of the embodiments, the support chuck driving mechanism includes a sliding guide rail and a driving unit, the sliding guide rail is disposed on the machine tool, and the length direction is the X direction, and the support chuck is slidably disposed on the sliding guide rail and connected to the driving unit.
As one embodiment, the laser pipe cutting machine further comprises a control system configured with an engineering figure recognition system, and the cutting head, the driving mechanism of the clamping chuck and the driving mechanism of the supporting chuck are electrically connected with the control system.
In one embodiment, the clamping end of each jaw of the support chuck is provided with at least one roller or ball for abutting against the pipe, and when the roller is adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe.
The invention has at least the following beneficial effects: according to the invention, the relative position relation between the notch and/or the cut on the pipe and the supporting chuck is judged in real time through the control system, and the supporting chuck is arranged to be movable, so that the supporting chuck is driven to be far away from the current cutting point under the condition that pipe clamping possibly occurs, thereby avoiding the pipe clamping phenomenon, ensuring the product safety and equipment safety, simultaneously shortening the waste material of the pipe at the tail end of the supporting chuck, and improving the material utilization rate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a laser pipe cutting machine according to an embodiment of the present invention;
fig. 2 is a control process schematic diagram of a pipe clamping suppression method of a pipe cutting machine according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 and 2, an embodiment of the present invention provides a pipe-clamping inhibiting method for a pipe cutting machine, which is used for preventing a cut or a gap on a pipe 4 from being easily clamped in a jaw of a support chuck 2 during operation of the pipe cutting machine, and the method includes:
s1: pre-inputting the position information of the to-be-cut point of the pipe 4 and the initial position information of the supporting chuck 2 into a control system;
s2: in the cutting process, the control system judges whether the relative position relation between the current cutting point and the support chuck 2 is in a safe range in real time, and if not, the support chuck 2 is driven to move towards the direction close to the clamping chuck 1.
Generally, the above-mentioned points to be cut include the notches and/or cuts to be made in the tube 4. The above-mentioned determination of whether the relative position relationship between the current cutting point and the support chuck 2 is in the safe range is also a determination of whether the current cutting point may be clamped by the support chuck 2.
In this embodiment, judge the relative position relation between breach and/or incision on tubular product 4 and the support chuck 2 in real time through control system to it is mobilizable to set up the support chuck 2, under the circumstances that card pipe probably appears, the drive supports chuck 2 and keeps away from current cutting point, thereby avoids appearing card pipe phenomenon, guarantees product safety and equipment safety.
Further, in S2, the real-time determination operation of the control system includes:
the control system calculates a real-time distance between the current cutting point and the support chuck 2 along the axial direction (corresponding to the X direction) of the pipe 4, compares the real-time distance with a preset distance threshold value, and drives the support chuck 2 to move towards the direction close to the clamping chuck 1, namely away from the laser cutting position if the real-time distance is smaller than the preset distance threshold value so as to avoid a notch or a gap on the pipe 4.
Further, the real-time determination work of the control system may further include:
the control system calculates the relative angle between the notch or cut at the current cutting point on the tube 4 and the support chuck 2 to determine whether the cutting point is too close to the support chuck 2 according to the current cutting trend, or calculates the spatial point coordinates of each notch/cut to determine whether the notch/cut at the current cutting point is in contact with the support chuck 2.
Further, if the real-time interval is smaller than a preset interval threshold value, the supporting chuck 2 is driven to move towards the direction close to the clamping chuck 1, and meanwhile, the clamping chuck 1 can still continue to feed forwards according to the specific machining characteristics of the pipe 4.
As one embodiment, the position information of the to-be-cut point of the pipe 4 is input through graphic design software in an engineering graphic recognition system, and the real-time position information of the current cutting point is determined through the engineering graphic recognition system. In this embodiment, the engineering pattern recognition system is adopted, which is helpful for the control system to determine whether the pipe clamping phenomenon is likely to occur in real time, has high determination accuracy, and is beneficial to the precise control of the production process. The engineering pattern recognition system is a common technical means in automated control engineering, can be purchased from the market, and is not described herein in detail; specifically, in the present embodiment, it can implement the following functions:
a, the control system can control the cutting head 3 to cut according to the graphic information input by the graphic design software of the graphic recognition system;
b, inputting the characteristics of the notch, the notch and the like required to be processed of the pipe 4 into a control system through graphic design software in the engineering graphic recognition system, and specifically, inputting the characteristics into the control system after forming an engineering code language through the graphic design software;
c, the current processing position and the graph can be identified, and the real-time position information of the current cutting point can be determined.
Those skilled in the art are familiar with: the system with the engineering figure recognition function is more, is common in the traditional CNC machining (numerical control machining), and generally realizes the process that the figure to be machined is directly drawn on a control interface (similar to a CAD interface) or a figure model is input into the system, various figure features are recognized by the system and converted into corresponding displacement code instructions so as to control the motion of a machining head.
In the above method, the position of the support chuck 2 can be precisely located and controlled by a control system, which is easily implemented by those skilled in the art, for example, a displacement encoder or the like can be provided on the driving unit of the support chuck 2. One preferred embodiment is: the supporting chuck 2 is driven by an air cylinder 7, and when the supporting chuck 2 needs to be driven to be far away from a cutting point, the air cylinder 7 retracts to the position of the minimum stroke; when the supporting chuck 2 needs to be driven to move away from the clamping chuck 1, the air cylinder 7 extends to the maximum stroke. In another embodiment, the drive unit supporting the chuck 2 may be replaced with other linear drive mechanisms such as a lead screw drive.
Further preferably, the movement of the support chuck 2 has an automatic driving mode and a manual driving mode, and thus has flexible control performance, and a control system is provided with both manual and automatic control modes, and the operation of the driving device can be controlled by a machine tool software command or manually controlled by an operator.
In a preferred embodiment, the clamping end of each jaw of the support chuck 2 is provided with at least one roller or ball, and when the roller is adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe 4, so that the support chuck 2 clamps the pipe 4 in a rolling contact manner. Through the structure, the pipe 4 can pass through the supporting chuck 2, the clamping jaws do not need to be loosened when the supporting chuck 2 is driven to reciprocate along X, the pipe 4 cannot be shaken and other displacement phenomena are avoided, and the cutting work of the pipe 4 can be prevented from being influenced, so that the cutting work of the pipe 4 can be simultaneously carried out by the cutting head 3 when the supporting chuck 2 moves along X, and the influence of the work of the supporting chuck 2 is avoided.
The pipe clamping inhibition method for the pipe cutting machine is applicable to cutting machining of square pipes, round pipes and other special-shaped pipes 4, has strong adaptability to characteristics of the pipes, and can shorten tailings for machining the pipes 4 due to the fact that the supporting chuck 2 is movably arranged, materials are effectively saved, and cost is reduced.
Example two
Referring to fig. 1, the embodiment of the invention relates to a laser pipe cutting machine, which comprises a machine tool 5, wherein a cutting head 3, a supporting chuck 2 and a clamping chuck 1 capable of feeding along an X direction are arranged on the machine tool 5, a feeding guide rail is arranged on the machine tool 5, the clamping chuck 1 is driven by an X-axis motor 6 and can linearly move along the X direction on the feeding guide rail, and a pneumatic clamping mechanism of the clamping chuck can drive a pipe 4 to rotate. Further, the support chuck 2 is connected with a support chuck driving mechanism which can drive the support chuck to slide along the X direction.
Can follow X through setting up support chuck 2 and to sliding, under the condition that card pipe probably appears, the drive supports chuck 2 and keeps away from current cutting point to avoid appearing card pipe phenomenon, guarantee product safety and equipment safety. Moreover, because the supporting chuck 2 is movably arranged, the tailing of the processed pipe 4 can be shortened, the material is effectively saved, and the cost is reduced.
As one embodiment, the driving mechanism of the support chuck 2 comprises a sliding guide rail and a driving unit 7, the sliding guide rail is arranged on the machine tool 5, the length direction of the sliding guide rail is the X direction, and the support chuck 2 is slidably arranged on the sliding guide rail and connected with the driving unit 7. The sliding guide rail can be combined with the feeding guide rail into a whole; the driving unit 7 may be a cylinder, an oil cylinder, an electric push rod or a lead screw. The drive unit 7 is fixedly mounted on the machine tool 5.
Further preferably, the clamping end of each jaw of the support chuck 2 is provided with at least one roller or ball for abutting against the pipe 4, and when the roller is adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe 4. Through the structure, the pipe 4 can pass through the supporting chuck 2, the clamping jaws do not need to be loosened when the supporting chuck 2 is driven to reciprocate along X, the pipe 4 cannot be shaken and other displacement phenomena are avoided, and the cutting work of the pipe 4 can be prevented from being influenced, so that the cutting work of the pipe 4 can be simultaneously carried out by the cutting head 3 when the supporting chuck 2 moves along X, and the influence of the work of the supporting chuck 2 is avoided. Wherein, because the tubular product 4 may make the linear motion in the X direction and the rotary motion around its own axis relative to the support chuck 2, the rolling bodies are preferably selected from balls, and the influence on the tubular product 4 is small.
Further preferably, the laser pipe cutting machine further comprises a control system configured with an engineering figure recognition system, and the cutting head 3, the driving mechanism of the clamping chuck 1 and the driving mechanism of the supporting chuck 2 are electrically connected with the control system. Generally, the laser pipe cutting machines are all provided with automatic control systems, which is a conventional technical means in the field and does not need additional programming; for the engineering pattern recognition system, reference may be made to the relevant contents in the first embodiment, and details are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A pipe clamping inhibition method for a pipe cutting machine is characterized by comprising the following steps:
s1: pre-inputting position information of a to-be-cut point of the pipe and initial position information of a supporting chuck into a control system;
s2: in the cutting process, the control system judges whether the relative position relation between the current cutting point and the support chuck is in a safe range in real time, and if not, the support chuck is driven to move towards the direction close to the clamping chuck; wherein, real-time judgement work of the control system includes: and the control system calculates the real-time distance between the current cutting point and the support chuck along the axial direction of the pipe, compares the real-time distance with a preset distance threshold value, and drives the support chuck to move towards the direction close to the clamping chuck if the real-time distance is smaller than the preset distance threshold value.
2. The pipe cutting machine pipe jamming inhibition method of claim 1, wherein: if the real-time interval is smaller than a preset interval threshold value, the supporting chuck is driven to move towards the direction close to the clamping chuck, and meanwhile, the clamping chuck can still continue to feed forwards according to the specific machining characteristics of the pipe.
3. The pipe cutting machine pipe jamming inhibition method of claim 1, wherein: the position information of the to-be-cut point of the pipe is input through graphic design software in an engineering graphic recognition system, and the real-time position information of the current cutting point is determined through the engineering graphic recognition system.
4. The pipe cutting machine pipe jamming inhibition method of claim 1, wherein: the clamping end of each clamping jaw of the supporting chuck is provided with at least one roller or ball, and when the rollers are adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe, so that the supporting chuck clamps the pipe in a rolling contact mode.
5. The pipe cutting machine pipe jamming inhibition method of claim 1, wherein: the movement of the support chuck has an automatic drive mode and a manual drive mode.
6. The utility model provides a laser pipe cutting machine, includes the lathe, be equipped with the cutting head on the lathe, support chuck and can follow the centre gripping chuck that X fed, its characterized in that: the supporting chuck is connected with a supporting chuck driving mechanism which can drive the supporting chuck to slide along the X direction;
still including the control system who disposes engineering figure recognition system, the cutting head the actuating mechanism of centre gripping chuck and support chuck actuating mechanism all with control system electric connection, control system calculates along the current cutting point of tubular product axial with support the real-time interval between the chuck to compare with predetermined interval threshold value, if real-time interval is less than predetermined interval threshold value, then the drive support the chuck to the direction motion that is close to centre gripping chuck.
7. The laser pipe cutter of claim 6, wherein: support chuck actuating mechanism including sliding guide rail and drive unit, sliding guide rail arrange in on the lathe and length direction be X to, support the chuck cunning locate on the sliding guide rail and with drive unit connects.
8. The laser pipe cutter of claim 6, wherein: the clamping end of each clamping jaw of the supporting chuck is provided with at least one roller or ball used for being abutted against the pipe, and when the roller is adopted, the axial direction of the roller of each roller is perpendicular to the axial direction of the pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711017178.7A CN107931855B (en) | 2017-10-26 | 2017-10-26 | Pipe clamping inhibition method for pipe cutting machine and laser pipe cutting machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711017178.7A CN107931855B (en) | 2017-10-26 | 2017-10-26 | Pipe clamping inhibition method for pipe cutting machine and laser pipe cutting machine |
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| CN107931855A CN107931855A (en) | 2018-04-20 |
| CN107931855B true CN107931855B (en) | 2020-05-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480159B (en) * | 2019-09-18 | 2020-07-07 | 济南邦德激光股份有限公司 | Laser pipe cutting machine and pipe clamping control method thereof |
| CN114505591A (en) * | 2022-01-28 | 2022-05-17 | 大族激光科技产业集团股份有限公司 | Pipe cutting control method, device and equipment and laser pipe cutting machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212647A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Automatic feeding method for processing tubes |
| CN203418236U (en) * | 2013-07-31 | 2014-02-05 | 武汉高能激光设备制造有限公司 | Pipe laser cutting machine |
| CN105312778A (en) * | 2015-10-15 | 2016-02-10 | 上海柏楚电子科技有限公司 | Pipe continuous cutting method |
| CN106166650A (en) * | 2016-07-15 | 2016-11-30 | 广东汉邦激光科技有限公司 | It is applied to tubular medical clamping device and laser cutting device |
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2017
- 2017-10-26 CN CN201711017178.7A patent/CN107931855B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212647A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Automatic feeding method for processing tubes |
| CN203418236U (en) * | 2013-07-31 | 2014-02-05 | 武汉高能激光设备制造有限公司 | Pipe laser cutting machine |
| CN105312778A (en) * | 2015-10-15 | 2016-02-10 | 上海柏楚电子科技有限公司 | Pipe continuous cutting method |
| CN106166650A (en) * | 2016-07-15 | 2016-11-30 | 广东汉邦激光科技有限公司 | It is applied to tubular medical clamping device and laser cutting device |
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